[v7,6/9] nfsd: move nfsd4_change_attribute to nfsfh.c

Message ID 20221017105709.10830-7-jlayton@kernel.org
State New
Headers
Series fs: clean up handling of i_version counter |

Commit Message

Jeff Layton Oct. 17, 2022, 10:57 a.m. UTC
  This is a pretty big function for inlining. Move it to being
non-inlined.

Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/nfsd/nfsfh.c | 27 +++++++++++++++++++++++++++
 fs/nfsd/nfsfh.h | 29 +----------------------------
 2 files changed, 28 insertions(+), 28 deletions(-)
  

Comments

Chuck Lever Nov. 3, 2022, 3:42 p.m. UTC | #1
> On Oct 17, 2022, at 6:57 AM, Jeff Layton <jlayton@kernel.org> wrote:
> 
> This is a pretty big function for inlining. Move it to being
> non-inlined.
> 
> Reviewed-by: NeilBrown <neilb@suse.de>
> Signed-off-by: Jeff Layton <jlayton@kernel.org>

Acked-by: Chuck Lever <chuck.lever@oracle.com>


> ---
> fs/nfsd/nfsfh.c | 27 +++++++++++++++++++++++++++
> fs/nfsd/nfsfh.h | 29 +----------------------------
> 2 files changed, 28 insertions(+), 28 deletions(-)
> 
> diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
> index d73434200df9..7030d9209903 100644
> --- a/fs/nfsd/nfsfh.c
> +++ b/fs/nfsd/nfsfh.c
> @@ -748,3 +748,30 @@ enum fsid_source fsid_source(const struct svc_fh *fhp)
> 		return FSIDSOURCE_UUID;
> 	return FSIDSOURCE_DEV;
> }
> +
> +/*
> + * We could use i_version alone as the change attribute.  However,
> + * i_version can go backwards after a reboot.  On its own that doesn't
> + * necessarily cause a problem, but if i_version goes backwards and then
> + * is incremented again it could reuse a value that was previously used
> + * before boot, and a client who queried the two values might
> + * incorrectly assume nothing changed.
> + *
> + * By using both ctime and the i_version counter we guarantee that as
> + * long as time doesn't go backwards we never reuse an old value.
> + */
> +u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode)
> +{
> +	if (inode->i_sb->s_export_op->fetch_iversion)
> +		return inode->i_sb->s_export_op->fetch_iversion(inode);
> +	else if (IS_I_VERSION(inode)) {
> +		u64 chattr;
> +
> +		chattr =  stat->ctime.tv_sec;
> +		chattr <<= 30;
> +		chattr += stat->ctime.tv_nsec;
> +		chattr += inode_query_iversion(inode);
> +		return chattr;
> +	} else
> +		return time_to_chattr(&stat->ctime);
> +}
> diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
> index c3ae6414fc5c..4c223a7a91d4 100644
> --- a/fs/nfsd/nfsfh.h
> +++ b/fs/nfsd/nfsfh.h
> @@ -291,34 +291,7 @@ static inline void fh_clear_pre_post_attrs(struct svc_fh *fhp)
> 	fhp->fh_pre_saved = false;
> }
> 
> -/*
> - * We could use i_version alone as the change attribute.  However,
> - * i_version can go backwards after a reboot.  On its own that doesn't
> - * necessarily cause a problem, but if i_version goes backwards and then
> - * is incremented again it could reuse a value that was previously used
> - * before boot, and a client who queried the two values might
> - * incorrectly assume nothing changed.
> - *
> - * By using both ctime and the i_version counter we guarantee that as
> - * long as time doesn't go backwards we never reuse an old value.
> - */
> -static inline u64 nfsd4_change_attribute(struct kstat *stat,
> -					 struct inode *inode)
> -{
> -	if (inode->i_sb->s_export_op->fetch_iversion)
> -		return inode->i_sb->s_export_op->fetch_iversion(inode);
> -	else if (IS_I_VERSION(inode)) {
> -		u64 chattr;
> -
> -		chattr =  stat->ctime.tv_sec;
> -		chattr <<= 30;
> -		chattr += stat->ctime.tv_nsec;
> -		chattr += inode_query_iversion(inode);
> -		return chattr;
> -	} else
> -		return time_to_chattr(&stat->ctime);
> -}
> -
> +u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode);
> extern void fh_fill_pre_attrs(struct svc_fh *fhp);
> extern void fh_fill_post_attrs(struct svc_fh *fhp);
> extern void fh_fill_both_attrs(struct svc_fh *fhp);
> -- 
> 2.37.3
> 

--
Chuck Lever
  

Patch

diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index d73434200df9..7030d9209903 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -748,3 +748,30 @@  enum fsid_source fsid_source(const struct svc_fh *fhp)
 		return FSIDSOURCE_UUID;
 	return FSIDSOURCE_DEV;
 }
+
+/*
+ * We could use i_version alone as the change attribute.  However,
+ * i_version can go backwards after a reboot.  On its own that doesn't
+ * necessarily cause a problem, but if i_version goes backwards and then
+ * is incremented again it could reuse a value that was previously used
+ * before boot, and a client who queried the two values might
+ * incorrectly assume nothing changed.
+ *
+ * By using both ctime and the i_version counter we guarantee that as
+ * long as time doesn't go backwards we never reuse an old value.
+ */
+u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode)
+{
+	if (inode->i_sb->s_export_op->fetch_iversion)
+		return inode->i_sb->s_export_op->fetch_iversion(inode);
+	else if (IS_I_VERSION(inode)) {
+		u64 chattr;
+
+		chattr =  stat->ctime.tv_sec;
+		chattr <<= 30;
+		chattr += stat->ctime.tv_nsec;
+		chattr += inode_query_iversion(inode);
+		return chattr;
+	} else
+		return time_to_chattr(&stat->ctime);
+}
diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h
index c3ae6414fc5c..4c223a7a91d4 100644
--- a/fs/nfsd/nfsfh.h
+++ b/fs/nfsd/nfsfh.h
@@ -291,34 +291,7 @@  static inline void fh_clear_pre_post_attrs(struct svc_fh *fhp)
 	fhp->fh_pre_saved = false;
 }
 
-/*
- * We could use i_version alone as the change attribute.  However,
- * i_version can go backwards after a reboot.  On its own that doesn't
- * necessarily cause a problem, but if i_version goes backwards and then
- * is incremented again it could reuse a value that was previously used
- * before boot, and a client who queried the two values might
- * incorrectly assume nothing changed.
- *
- * By using both ctime and the i_version counter we guarantee that as
- * long as time doesn't go backwards we never reuse an old value.
- */
-static inline u64 nfsd4_change_attribute(struct kstat *stat,
-					 struct inode *inode)
-{
-	if (inode->i_sb->s_export_op->fetch_iversion)
-		return inode->i_sb->s_export_op->fetch_iversion(inode);
-	else if (IS_I_VERSION(inode)) {
-		u64 chattr;
-
-		chattr =  stat->ctime.tv_sec;
-		chattr <<= 30;
-		chattr += stat->ctime.tv_nsec;
-		chattr += inode_query_iversion(inode);
-		return chattr;
-	} else
-		return time_to_chattr(&stat->ctime);
-}
-
+u64 nfsd4_change_attribute(struct kstat *stat, struct inode *inode);
 extern void fh_fill_pre_attrs(struct svc_fh *fhp);
 extern void fh_fill_post_attrs(struct svc_fh *fhp);
 extern void fh_fill_both_attrs(struct svc_fh *fhp);